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Fischer-Tropsch wax and hydrocarbon mixtures for transport (law938)

a technology of hydrocarbon mixture and wax, which is applied in the direction of oxygen-containing compound preparation, gaseous mixture working up, separation process, etc., can solve the problems of difficult to find solvents in remote locations, and the above-mentioned conventional methods for shipping wax are often unavailabl

Inactive Publication Date: 2001-09-25
EXXON RES & ENG CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, most gas conversion plants are built in remote locations and hence, the above-mentioned conventional methods for shipping the wax are often unavailable.
However, the availability of solvents in remote locations can be a problem.

Method used

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  • Fischer-Tropsch wax and hydrocarbon mixtures for transport (law938)

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Experimental program
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Embodiment Construction

Fischer-Tropsch synthesis product was fractionated to obtain naphtha with a boiling range from about 95.degree. F. to about 320.degree. F. The quality of separation was measured by High Temperature Simulated Distillation Gas Chromatography (GCD) using a HP 6890 series gas chromatograph. The wax was the total solid product from the Fischer-Tropsch synthesis at ambient conditions with a boiling range of 453.degree. F. to 1129.degree. F. based on 5 and 95 weight percent GCD, respectively. The GCD data are presented in Table 1 below.

The mixtures were produced by granulating the wax into finely divided flakes and then mixing the wax with the naphtha in a colloid mill with varying rotor-stator gap widths and times. This blending process was repeated for a range of wax concentrations from about 7 to 30 weight percent.

Pour points were measured by an ISL pour point analyzer and the Brookfield viscosity was measured using a viscometer from about 100.degree. F. to the pour point. The results a...

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Abstract

The invention is a process for producing a mixture of Fischer-Tropsch product that is solid at ambient conditions (between 32° F. and 95° F.), such as wax, and hydrocarbon liquid, such as naphtha, that can be pumped at ambient temperature (between 32° F. and 95° F.). The temperature of the mixture is controlled below the melting point of the Fischer-Tropsch product. The present invention provides for the transport of Fischer-Tropsch product from a remote location in a readily available medium, such as naphtha, via pipeline, tanker or railcar. At the completion of the transport, the hydrocarbon liquid and Fischer-Tropsch product are separated by conventional methods such as flashing, distillation, or filtration with minimal contamination from the hydrocarbon liquid.

Description

The present invention pertains to a process for producing a mixture of a Fischer-Tropsch product that is solid at ambient conditions (between 32.degree. F. and 95.degree. F.), such as Fischer-Tropsch wax, and a hydrocarbon liquid at ambient temperature, such as naphtha, that can be pumped from a remote location and subsequently separated by conventional methods such as flashing, distillation, or filtration with minimal contamination from the hydrocarbon liquid.BACKGROUND INFORMATIONOil fields typically have deposits of natural gas associated with them. In remote locations where transport of this gas may not be economically attractive, gas conversion technology can be used for chemically converting natural gas to higher molecular weight hydrocarbons. Current gas conversion technologies rely on the chemical conversion of natural gas to synthesis gas, which is a mixture of carbon monoxide and hydrogen. Synthesis gas is then reacted in a catalyzed hydrocarbon synthesis process commonly ...

Claims

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Application Information

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Patent Type & Authority Patents(United States)
IPC IPC(8): C10G73/40C10G73/00C10L1/32C10G2/00B01D3/00B01F3/08
CPCC10G2/30C10L1/322C10G73/40C10G73/00C10G70/00
Inventor GENETTI, W. B.ANSELL, L. L.RYAN, DANIEL F.BERLOWITZ, PAUL J.
Owner EXXON RES & ENG CO
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